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INDIA: Stem borer menace haunts mango growers in Srinivaspur again ...














Srinivaspur, Oct 7, 2012, DHNS









The stem borer menace has made its appearance in the mango farms of Srinivaspur taluk. 





Mango suffers from several diseases at all stages of its life. All the parts of the plant, namely, trunk, branch, twig, leaf, petiole, flower and fruit are attacked by a number of pathogens including fungi, bacteria and algae.





They cause several kinds of rot, die back, necrosis, blotch, spots and mildew. Some of these diseases, including stem borer menace, are of great economic importance as they cause heavy losses in mango production.




Stem borer is widely distributed in India and attacks a variety of fruit trees including mango. Damage is caused by the grub of this beetle as it feeds inside the stems boring upward resulting in drying of branches and in severe cases attained stem also dies.




Adult beetles, 35-50 mm in size, are stout and greyish brown in colour with dark brown and black spots. Eggs are laid either in the slits of tree trunk or in the cavities in main branches and stems covered with a viscous fluid. Pupation takes place within the stem.
The mango stem borer does not appear in all mango-cultivating areas but in the areas where it is found it causes severe loss.




The important symptoms of the infestation are the holes on the bark due to feeding. The stem borer menace stunts the growth of the mango tree. At later stage of infestation the mango trees dry up.








The pest can be managed by pruning off the infested twigs of tree and destroying the larvae of the insect. They can also be controlled by the use of various chemical applications. Prof Nachegowda of the Horticultural College in Kolar says that the stem borer has been seen mostly in the Badami variety of mango. This is because of the sweetness and taste of the core of the tree trunk, he said.








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In alphabetical order by Country....










India




Alphonso





Alphonso (mango)
From Wikipedia, the free encyclopedia








Alphonso (हापुस Haapoos in Marathi, હાફુસ in Gujarati, ಆಪೂಸ್ Aapoos in Kannada) is a mango cultivar that is considered by many[who?] to be one of the best in terms of sweetness, richness and flavor. 


It has considerable shelf life of a week after it is ripe making it exportable. 

It is also one of the most expensive kinds of mango and is grown mainly in Kokan region of western India.

 It is in season April through May and the fruit wei…

INDIA 2016 : Mango production in state likely to take a hit this year

TNN | May 22, 2016, 12.32 PM IST






Mangaluru: Vagaries of nature is expected to take a toll on the production of King of Fruits - Mango - in Karnataka this year. A combination of failure of pre-monsoon showers at the flowering and growth stage and spike in temperature in mango growing belt of the state is expected to limit the total production of mango to an estimated 12 lakh tonnes in the current season as against 14 lakh tonnes in the last calendar year.



However, the good news for fruit lovers is that this could see price of mangoes across varieties decrease marginally by 2-3%. This is mainly on account of 'import' of the fruit from other mango-growing states in India, said M Kamalakshi Rajanna, chairperson, Karnataka State Mango Development and Marketing Corporation Ltd.




Karnataka is the third largest mango-growing state in India after Uttar Pradesh and Maharashtra.



Inaugurating a two-day Vasanthotsava organized by Shivarama Karantha Pilikula Nisargadhama and the Corporation at P…

Mangoes date back 65 million years according to research ...

Experts at the Birbal Sahni Institute of Palaeobotany (BSIP) here have traced the origin of mango to the hills of Meghalaya, India from a 65 million year-old fossil of a mango leaf. 





The earlier fossil records of mango (Mangifera indica) from the Northeast and elsewhere were 25 to 30 million years old. The 'carbonized leaf fossil' from Damalgiri area of Meghalaya hills, believed to be a mango tree from the peninsular India, was found by Dr R. C. Mehrotra, senior scientist, BSIP and his colleagues. 




After careful analysis of the fossil of the mango leaf and leaves of modern plants, the BISP scientist found many of the fossil leaf characters to be similar to mangifera.


An extensive study of the anatomy and morphology of several modern-day species of the genus mangifera with the fossil samples had reinforced the concept that its centre of origin is Northeast India, from where it spread into neighbouring areas, says Dr. Mehrotra. 




The genus is believed to have disseminated into neighb…